/* ispunct example */
#include <stdio.h>
#include <ctype.h>

int main()
{
  int i = 0;
  int cx = 0;
  char str[] = "Hello, welcome!";
  while (str[i]) {
    if (ispunct(str[i])) cx++;
    i++;
  }
  printf("Sentence contains %d punctuation characters.\n", cx);
  return 0;
}
